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Finding the Fourth Proportional to 98,161.82, 135,459.62 and 59,985.20

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Solution

The fourth proportional to 98,161.82, 135,459.62 and 59,985.20 is: 82,777.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,161.82 : 135,459.62 = 59,985.20 : x
  2. Step 2: Convert to fraction form
    98,161.82/135,459.62 = 59,985.20/x
  3. Step 3: Cross multiply
    98,161.82x = 135,459.62 × 59,985.20
  4. Step 4: Simplify right side
    98,161.82x = 8,125,572,436.35
  5. Step 5: Solve for x
    x = 8,125,572,436.35/98,161.82
  6. Step 6: Final answer
    x = 82,777.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.